GoGuard

GoGuard is a tool to generate simple resource guards.

Usage

Generate a guard for type *Resource with name ResourceGuard at file resource_guard.go:

goguard *Resource Resource

usage in code:

g := NewIntGuard(10)
g.Open(func(v int){
    //v's access is synchronized
})

Advantage

The conventional way of synchroning a resource:

mu := &sync.Mutex{}
resource := Resource{}
mu.Lock()
//use it
mu.Unlock()

Using a guard:

guard := NewResourceGuard(&Resource{})
guard.Open(func(r *Resource){
    //use it
})

• guard is more succint and, I think, more declarative.
• guard limits the scope of a resource to where it's safe to use and thus it's hard for racey mistakes to occur.
• guard prevents your code/structs from being cluttered with mutexes.